Multichannel syringe for use with a metering device

Abstract

A multichannel syringe for use with a metering device having a barrel holding apparatus of a syringe barrel and an axially movable holding apparatus of a syringe plunger 5 comprising: a plunger unit having a drive rod comprising the plunger holding apparatus, a crossmember on the lower end of the drive rod, and a plurality of syringe plungers projecting downward and parallel to the drive rod, a barrel unit comprising a support and rows of syringe barrels arranged in a parallel 10 manner, protruding downwards from the support, and having lower and upper syringe openings, and a running region, wherein each syringe plunger engages a syringe barrel through, an upper syringe opening and is sealingly guided in the running region, and the barrel holding apparatus is above the syringe barrel and is connected to the support.

The invention claimed is: 
     
       1. A multichannel syringe for use with a metering device for metering liquids in a laboratory with a first holding apparatus for a barrel holding apparatus of a syringe barrel and an axially movable second holding apparatus for a plunger holding apparatus of a syringe plunger comprising:
 a single-part plunger unit made of plastic that has a drive rod with the plunger holding apparatus on the upper end, a crossmember which is oriented perpendicularly to the drive rod on the lower end of the drive rod, a plurality of syringe plungers projecting downward from the crossmember and parallel to the drive rod, and a peripheral sealing region on each syringe plunger, 
 a single-part barrel unit made of plastic comprising a support and at least one row of syringe barrels which are arranged adjacently in a parallel manner, which protrude downwards from the support, each of which has a lower syringe opening, an upper syringe opening, and a running region in the interior for one syringe plunger of the plunger unit, 
 wherein each syringe plunger engages into a syringe barrel through an upper syringe opening and is sealingly movable in the running region with the sealing region sealingly lying against the running region, and 
 the barrel holding apparatus is arranged above the syringe barrels and is connected to the support, wherein the support comprises a bottom wall of a housing that is formed integrally with the syringe barrels, and the housing has sidewalls that project from the bottom wall upward and are connected to the barrel holding apparatus, and further wherein the housing has bars that project on the inside and are slotted in an axial direction and into which ribs of the drive rod engage. 
 
     
     
       2. A multichannel syringe for use with a metering device for metering liquids in a laboratory with a first holding apparatus for a barrel holding apparatus of a syringe barrel and an axially movable second holding apparatus for a plunger holding apparatus of a syringe plunger comprising:
 a single-part plunger unit made of plastic that has a drive rod with the plunger holding apparatus on the upper end, a crossmember which is oriented perpendicularly to the drive rod on the lower end of the drive rod, a plurality of syringe plungers projecting downward from the crossmember and parallel to the drive rod, and a peripheral sealing region on each syringe plunger, 
 a single-part barrel unit made of plastic comprising a support and at least one row of syringe barrels which are arranged adjacently in a parallel manner, which protrude downwards from the support, each of which has a lower syringe opening, an upper syringe opening, and a running region in the interior for one syringe plunger of the plunger unit, 
 wherein each syringe plunger engages into a syringe barrel through an upper syringe opening and is sealingly movable in the running region with the sealing region sealingly lying against the running region, and 
 the barrel holding apparatus is arranged above the syringe barrels and is connected to the support, wherein the support comprises a bottom wall of a housing that is formed integrally with the syringe barrels, and the housing has sidewalls that project from the bottom wall upward and are connected to the barrel holding apparatus, and further wherein the bottom wall is connected integrally by means of film hinges to the sidewalls on two longitudinal sides that oppose each other, at least one of the sidewalls is connected at the top to the barrel holding apparatus, the sidewalls are folded at the film hinges, and the sidewalls are connected to each other. 
 
     
     
       3. The multichannel syringe according to  claim 2 , wherein the sidewalls having narrow sidewall parts that project from side edges, wherein at least two sidewall parts when in a folded position jointly form a narrow sidewall. 
     
     
       4. The multichannel syringe according to  claim 2 , wherein the barrel holding apparatus has two halves, wherein each half is connected to one sidewall of the housing, and the two halves lie against each other on edges that are diametrically opposed to each other. 
     
     
       5. The multichannel syringe according to  claim 2 , wherein the sidewalls of the barrel holding apparatus are connected to each other and/or aligned with each other by locking elements, and/or by hot caulking, and/or by welding, and/or by adhesive bonding, and/or by centering elements. 
     
     
       6. A multichannel syringe for use with a metering device for metering liquids in a laboratory with a first holding apparatus for a barrel holding apparatus of a syringe barrel and an axially movable second holding apparatus for a plunger holding apparatus of a syringe plunger comprising:
 a single-part plunger unit made of plastic that has a drive rod with the plunger holding apparatus on the upper end, a crossmember which is oriented perpendicularly to the drive rod on the lower end of the drive rod, a plurality of syringe plungers projecting downward from the crossmember and parallel to the drive rod, and a peripheral sealing region on each syringe plunger, 
 a single-part barrel unit made of plastic comprising a support and at least one row of syringe barrels which are arranged adjacently in a parallel manner, which protrude downwards from the support, each of which has a lower syringe opening, an upper syringe opening, and a running region in the interior for one syringe plunger of the plunger unit, 
 wherein each syringe plunger engages into a syringe barrel through an upper syringe opening and is sealingly movable in the running region with the sealing region sealingly lying against the running region, and 
 the barrel holding apparatus is arranged above the syringe barrels and is connected to the support, wherein the barrel holding apparatus has a code on the top edge. 
 
     
     
       7. A multichannel syringe for use with a metering device for metering liquids in a laboratory with a first holding apparatus for a barrel holding apparatus of a syringe barrel and an axially movable second holding apparatus for a plunger holding apparatus of a syringe plunger comprising:
 a single-part plunger unit made of plastic that has a drive rod with the plunger holding apparatus on the upper end, a crossmember which is oriented perpendicularly to the drive rod on the lower end of the drive rod, a plurality of syringe plungers projecting downward from the crossmember and parallel to the drive rod, and a peripheral sealing region on each syringe plunger, 
 a single-part barrel unit made of plastic comprising a support and at least one row of syringe barrels which are arranged adjacently in a parallel manner, which protrude downwards from the support, each of which has a lower syringe opening, an upper syringe opening, and a running region in the interior for one syringe plunger of the plunger unit, 
 wherein each syringe plunger engages into a syringe barrel through an upper syringe opening and is sealingly movable in the running region with the sealing region sealingly lying against the running region, and the barrel holding apparatus is arranged above the syringe barrels and is connected to the support, wherein the barrel holding apparatus has an annular disc-shaped flange, and the drive rod is arranged on a middle axis of the annular disc-shaped flange. 
 
     
     
       8. The multichannel syringe according to  claim 7 , wherein the barrel holding apparatus has a hollow cylindrical retaining pin, the drive rod is arranged on a middle axis of the retaining pin, and the flange is connected to a top end of the retaining pin. 
     
     
       9. A multichannel syringe for use with a metering device for metering liquids in a laboratory with a first holding apparatus for a barrel holding apparatus of a syringe barrel and an axially movable second holding apparatus for a plunger holding apparatus of a syringe plunger comprising:
 a single-part plunger unit made of plastic that has a drive rod with the plunger holding apparatus on the upper end, a crossmember which is oriented perpendicularly to the drive rod on the lower end of the drive rod, a plurality of syringe plungers projecting downward from the crossmember and parallel to the drive rod, and a peripheral sealing region on each syringe plunger, 
 a single-part barrel unit made of plastic comprising a support and at least one row of syringe barrels which are arranged adjacently in a parallel manner, which protrude downwards from the support, each of which has a lower syringe opening, an upper syringe opening, and a running region in the interior for one syringe plunger of the plunger unit, 
 wherein each syringe plunger engages into a syringe barrel through an upper syringe opening and is sealingly movable in the running region with the sealing region sealingly lying against the running region, and the barrel holding apparatus is arranged above the syringe barrels and is connected to the support, wherein the crossmember is plate-shaped, has a rectilinear base oriented perpendicular to the drive rod from which each of the syringe plungers projects downwardly therefrom, and has a first upward tapering at a top, wherein the drive rod projects upward from a top end of the crossmember. 
 
     
     
       10. The multichannel syringe according to  claim 9 , wherein each syringe plunger has a plunger rod that is connected at a top to the crossmember and at a bottom to a plunger which is sealingly guided in the running region. 
     
     
       11. The multichannel syringe according to  claim 9 , wherein each syringe plunger has a plunger tip on a bottom end, and each syringe barrel has a barrel tip on a bottom barrel tip end into which the plunger tip can be inserted. 
     
     
       12. The multichannel syringe according to  claim 9 , wherein the crossmember, and/or the drive rod, and/or the plunger rods have ribs which project outward and extend parallel to the syringe plunger. 
     
     
       13. The multichannel syringe according to  claim 9 , wherein the support comprises a bottom wall of a housing that is formed integrally with the syringe barrels, and the housing has sidewalls that project from the bottom wall upward and are connected to the barrel holding apparatus. 
     
     
       14. The multichannel syringe according to  claim 13 , wherein the housing has a tapering at the top. 
     
     
       15. The multichannel syringe according to  claim 9 , wherein the support is connected integrally to the barrel holding apparatus. 
     
     
       16. The multichannel syringe according to  claim 9 , wherein the plunger unit is injection molded as a single part, and/or the barrel unit, and/or a housing, and/or the barrel holding apparatus are injection molded as a single part. 
     
     
       17. A multichannel syringe according to  claim 9 , in combination with a metering device for metering liquids in a laboratory with a first holding apparatus for a barrel holding apparatus of a syringe barrel and an axially movable second holding apparatus for a plunger holding apparatus of a syringe plunger. 
     
     
       18. The multichannel syringe in combination with a metering device according to  claim 17 , wherein the metering device is a portable or stationary metering device that is manually driven or driven by an electric motor.